Are there restrictions for using my Merlin Pass at Warwick Castle Resort? For information regarding restrictions, please visit here to view our restrictions calendar. Related articles Is Car Parking included in a Warwick Castle Annual Pass? Can I use my Warwick or Merlin Annual Pass for entry into the Castle Dungeon? Do I need to pre-book entry to Warwick Castle Resort if I am a Merlin Pass Holder? How do I purchase Merlin Pass Friends and Family tickets? How do I purchase a Car Parking ticket?